1. https://www.nationalmssociety.org/NationalMSSociety/media/MSNationalFiles/Brochures/Brochure-Bowel-Problems.pdf (son erişim tarihi: 01.09.2020).
2. http://www.hacettepehemsirelikdergisi.org/pdf/pdf_HHD_31.pdf (son erişim tarihi: 01.09.2020).
3. Rome IV , Functional GI Disorders, Gastroenterology 2016;150:1257–126.
4. https://badgut.org/information-centre/a-z-digestive-topics/constipation/ (son erişim tarihi: 01.09.2020).